FRANCE 24 had an exclusive report this week on two French tourists kidnapped in Benin. We also took a look at the grandparents taking France to court, how plastic surgery is done "à la française" and the Nigerian women forced into prostitution.

The grandparents of two French children detained with their jihadist mother in Kurdish-held Syria filed a lawsuit at Europe’s top rights court Monday over France’s refusal to repatriate them. FRANCE 24 spoke to a lawyer involved in the case.

Following his meeting with French President Emmanuel Macron in Paris this Wednesday, Libya's Fayez al-Sarraj, head of the Tripoli-based Government of National Accord (GNA), granted an exclusive interview to FRANCE 24. He urged France to adopt "a clear political position" on the situation in Libya and accused his rival, General Khalifa Haftar, of ending all hope of a political settlement to the crisis in the war-torn North African country.

Libya's Fayez al-Sarraj, head of the Tripoli-based Government of National Accord (GNA).FRANCE 24

This week, we're at a Parisian clinic to put the French approach to cosmetic surgery under the knife. With 517,000 procedures a year, the country ranks in 10th place, far behind the US, Brazil and Japan, the world's largest cosmetic surgery consumers. Yet France has largely contributed to the field, not only with innovations like the inflatable breast implant, but also through pioneers, such as the world's first female cosmetic surgeon, Suzanne Noël.

A group called "Sound and Picture Organisation" seeks to track down atrocities committed by extremist outfits, including the Islamic State group. They have 70 members worldwide, some of whom are a network of clandestine individuals, who have been reporting on IS group activities in the region. Beyond that, they also have specialists who work to analyse and identify material distributed by extremist groups. Mohammad Khedhr, who's part of the organisation, tells us about his network.

France's south-western Périgord region comes in four colours: green, purple, black and white. First stop: the green Périgord and its bike trail to contemplate the richness of the meadows. Next comes a wine-tasting session in Bergerac in the purple Périgord, a region of orchards and vineyards. It's impossible to miss out on the black Périgord, where the famous prehistoric Lascaux cave is located. Our colourful trip ends in the white Périgord, where we discover Roman ruins.

In this edition, how the scourge of sex trafficking has meant thousands of young Nigerian women are being forced into prostitution in Italy. Also, as the number of homeless people increases in Paris, the city is now offering a female-only shelter for those sleeping in the rough. Plus, the trucking company in Ghana that decided to employ solely women drivers.

Can joy be found in things? Do certain shapes or colours make us more joyful than others? Some things like rainbows and confetti are universally joyful, bringing that feeling of excitement to people across the world, from all ages and social backgrounds. While we have increasingly been told that joy comes from within, US designer and writer Ingrid Fetell Lee has spent ten years researching joy and discovered that it can actually come from our outside world.

After eight years of war in Syria, with more than 370,000 people killed, German federal prosecutors are tracking down former senior officials of the Assad regime who are accused of war crimes. Several arrests have been made in Germany and France in recent months. In this quest for justice, the testimony of Syrian refugees in Germany is essential. Our Berlin correspondents report.

James Kent's latest feature sees Keira Knightley, Jason Clarke and Alexander Skarsgard deal with the immediate consequences of the Second World War; film critic Lisa Nesselson tells us why "The Aftermath" has some redeeming qualities.